| 摘要 |
An X-ray analysis apparatus comprises angle encoders for the determination of angular positions of rotary shafts, for example the theta shaft for a specimen, the 2 theta shaft of a detector arm or the rotary shaft of a source. Because the angles are directly or indirectly measured relative to a fixed point, preferably coupled to a goniometer frame of the apparatus, accurate angle detection is ensured. The encoders can also be used as adjusting mechanisms for exact, flexible angular adjustment.
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